MK5811CMLF Clock Generator IC Equivalent & Substitute Parts

Part Overview

The MK5811CMLF is a Clock Generator IC manufactured by Renesas Electronics Corporation, designed for 32MHz clock generation applications in 8-SOIC surface mount packaging. This part is classified as Obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations. The device features integrated PLL functionality with LVCMOS output capability, operating across a 3V to 3.63V supply range and 0°C to 85°C temperature specifications.

Key Parameters

Parameter	MK5811CMLF Value
Manufacturer	Renesas Electronics Corporation
Category	Clock/Timing
Type	Clock Generator
Frequency - Max	32MHz
PLL	Yes
Input Type	Clock, Crystal
Output Type	LVCMOS
Number of Circuits	1
Ratio - Input:Output	1:1
Voltage - Supply	3V ~ 3.63V
Operating Temperature	0°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MK5811CMLF requires evaluation against the following critical parameters:

Functional Compatibility Criteria:

Clock Generator IC classification with integrated PLL
LVCMOS output capability (minimum requirement)
Single circuit configuration
Maximum frequency capability of 32MHz or greater

Electrical Compatibility Criteria:

Supply voltage range must encompass or exceed 3V to 3.63V
Operating temperature range must support 0°C to 85°C minimum
Input compatibility with Clock or Crystal sources

Compliance & Reliability Criteria:

ROHS3 compliance (matching original specification)
Active or current product status preferred for long-term availability
Moisture Sensitivity Level appropriate for manufacturing processes

The identified substitute part 5P49V6975A000LTGI meets these criteria through expanded capability parameters while maintaining core functional compatibility and regulatory compliance.

Parameter Comparison

Parameter	MK5811CMLF	5P49V6975A000LTGI	Compatibility Notes
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation	Same manufacturer ensures design continuity
Category	Clock/Timing	Clock/Timing	Identical functional category
Type	Clock Generator	Clock Generator	Core function maintained
PLL	Yes	Yes with Bypass	Substitute offers enhanced PLL flexibility
Frequency - Max	32MHz	350MHz	Substitute supports higher frequency operation
Input Type	Clock, Crystal	HCSL, LVCMOS, LVDS, LVPECL, Crystal	Substitute provides expanded input options
Output Type	LVCMOS	HCSL, LVCMOS, LVDS, LVPECL	LVCMOS output available; additional formats supported
Number of Circuits	1	1	Identical circuit count
Voltage - Supply	3V ~ 3.63V	1.71V ~ 3.465V	Substitute range encompasses original specification
Operating Temperature	0°C ~ 85°C	-40°C ~ 85°C	Substitute supports extended low-temperature operation
Mounting Type	Surface Mount	Surface Mount	Identical mounting technology
Package / Case	8-SOIC (0.154", 3.90mm Width)	24-LFLGA Exposed Pad (4x4)	Different package; PCB layout redesign required
Product Status	Obsolete	Active	Substitute is actively manufactured and supported
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical compliance status
MSL Rating	1 (Unlimited)	3 (168 Hours)	Substitute requires standard moisture control procedures

Engineering Selection Recommendations

Product Status Consideration: The MK5811CMLF is classified as Obsolete, creating supply chain risk for new production and field replacements. The substitute part 5P49V6975A000LTGI carries Active product status from the same manufacturer, ensuring long-term availability and manufacturing support.

Compliance & Certification: Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for industrial and commercial applications. The substitute part's Active status provides assurance of continued compliance maintenance and documentation availability.

Functional Capability: The 5P49V6975A000LTGI operates within the electrical parameters required by MK5811CMLF applications while providing expanded frequency capability (350MHz vs. 32MHz) and extended temperature range (-40°C to 85°C vs. 0°C to 85°C). These enhanced specifications ensure compatibility with existing 32MHz clock generation requirements without performance degradation.

Implementation Considerations: Package transition from 8-SOIC to 24-LFLGA requires PCB layout modification. The substitute's expanded input/output format options (HCSL, LVDS, LVPECL in addition to LVCMOS) provide design flexibility for future system enhancements while maintaining backward compatibility through LVCMOS output availability.

Frequently Asked Questions (FAQ)

Q: Can the 5P49V6975A000LTGI directly replace the MK5811CMLF without PCB modifications?

A: No. The MK5811CMLF uses 8-SOIC packaging while the 5P49V6975A000LTGI uses 24-LFLGA Exposed Pad packaging. PCB layout redesign is required, including trace routing, via placement, and thermal management for the exposed pad configuration.

Q: What are the key electrical compatibility factors for this substitution?

A: The substitute part's supply voltage range (1.71V ~ 3.465V) encompasses the original specification (3V ~ 3.63V). Both parts support LVCMOS output and operate within overlapping temperature ranges. The substitute's PLL with Bypass option provides equivalent or enhanced functionality compared to the original PLL implementation.

Q: Is the 5P49V6975A000LTGI suitable for 32MHz clock generation applications?

A: Yes. The 5P49V6975A000LTGI supports maximum frequency of 350MHz, which exceeds the 32MHz requirement. The device can be configured to generate 32MHz output through its divider/multiplier functionality while maintaining the same output signal integrity as the original part.

Q: What moisture handling differences exist between these parts?

A: The MK5811CMLF has MSL Rating 1 (Unlimited), requiring no special moisture control. The 5P49V6975A000LTGI has MSL Rating 3 (168 Hours), requiring standard moisture control procedures including baking before reflow soldering if the part has been exposed to ambient humidity for extended periods.

Q: Are there input signal compatibility considerations?

A: The MK5811CMLF accepts Clock or Crystal inputs. The 5P49V6975A000LTGI accepts HCSL, LVCMOS, LVDS, LVPECL, or Crystal inputs. If the original design uses Clock or Crystal input, the substitute will operate correctly. If future designs require differential input formats (LVDS, LVPECL), the substitute provides this capability.

Q: What is the inventory status for these parts?

A: The MK5811CMLF has 2090 pieces in stock as New Original. The 5P49V6975A000LTGI has 682 pieces in stock as New Original. Both parts are available for immediate procurement.

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